Alternatives to Chessable
MoveTrainer + spaced repetition for openings and tactics. If that's not for you - or you want to try something different - here are apps that overlap on features and use cases.
Players search for Chessable alternatives for predictable reasons: a $100 course was bought, half-finished, and the MoveTrainer drilling started to feel like a chore; the spaced-repetition rigidity stopped fitting a real schedule; or a course's narrator just wasn't the right teaching voice. Chessable's underlying technology works - but it's not the only way to learn chess content.
First-line alternative
ChessMood is the closest like-for-like for course-driven learning, but with a subscription model and a curated curriculum instead of à-la-carte purchases. The accountability layer (forums, study plans, mentor responses) replaces the discipline that the MoveTrainer is meant to provide. For a player who didn't finish their last three Chessable courses, the accountability is the actual product.
Second option
For free or near-free alternatives, Chess Tempo (puzzles, endgames, opening trees) and Listudy (open-source spaced-repetition for self-built courses) cover most of the same ground. They lack the polish and the 2500+ author content, but they cost zero. Combining both with a free YouTube opening primer covers 80% of what a paid Chessable course delivers, for a fraction of the cost.
Verdict
The honest reason most players bounce off Chessable is finishing rate, not feature gaps. Switching to ChessMood addresses that directly. Switching to Chess Tempo plus Listudy reduces cost but doesn't fix discipline. Pick the alt that fixes the actual problem, not the one that looks shinier.

Chess King Learn
Chess King (CHESSQUEEN INC, ex-Convekta)
Huge Convekta course catalog in one app.

Listudy
Arne Vogel
Free open-source spaced repetition for openings.

ChessAtlas
ChessAtlas
Build an opening repertoire that survives spaced repetition.

Lichess
Lichess (charity)
Free, open-source chess. Forever.

Chess.com
Chess.com, LLC
The default home of online chess.

Chess Tempo
Chess Tempo
The serious puzzle grinder's tool.

ChessMood
ChessMood
GM-led video courses plus live coaching community.

ChessBase
ChessBase GmbH
The professional's database and analysis suite.